If your wiring is good you may have an alternator that is not working properly or a bad relay in the regulator. If the alternator is working properly you should have over 6 volts on the R terminal at the alternator. That voltage from the alternator closes the relay in the regulator and turns off the indicator light. When the relay closes it also provides battery voltage to the field windings in the alternator.
If the relay does not work the power to the alternator field coils is provided through the indicator lamp and the resistor at the regulator. Since that circuit provides less than battery voltage it can keep the alternator from reaching its full output.
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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